Supplemental Financial Data - Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Disclosure Text Block Supplement [Abstract]
Deferred revenue - long term	$ 13.7	$ 14.6		$ 5.8
U.S. tax liability associated with the 2017 Act	44.6	49.8
Long-term lease liability	59.4	62.5
Liabilities for unrecognized tax benefits	19.2	18.9
Other	7.8	8.6
Total	$ 144.7	$ 154.4	[1]

[1] See discussion in Note 1 - Basis of Presentation and Description of Business for further detail regarding the elimination of the International lag reporting.